CR333 is a contact smart card reader that combines smart card and SIM card functionalities. It has a smart card slot and a SIM card slot,supporting individual use but not simultaneous use. It supports A,B,and C class (5V,3V,and 1.8V) smart cards compliant with ISO 7816 standards and communicates with PC environments through a USB interface compatible with different operating systems. •USB Smart Card Reader Detection: This SIM card reader features motion detection,automatic power-off for smart card types,automatic short circuit detection,and thermal protection functions •Ease of Use: Simply insert a card for authentication. It includes a one-click operation interface to help users complete various operations faster and more accurately •Safe and Durable: The CAC card reader is made from high-density,eco-friendly ABS material,ensuring safety and long-lasting use •Wide Compatibility: This practical smart card reader is compatible with multiple operating systems,including Windows,Linux,and for MacOS •Versatile Applications: Suitable for various smart card operations,including digital authentication and security,network ATM transfers,payments,balance inquiries,taxes,and utility payments Specifications: •Material: ABS •Dimensions: about 66.5*64*12.5mm/2.62*2.52*0.49 inch •Cable Length: about 80cm/31.5 inch System Support: •Microsoft Windows XP and above •Linux Fedora FC8 and above •For Mac OS 10.6.2 and above Package included: •1 x Card Reader •1 x CD •1 x English User Manual •Other items not included